Organic Maps sources as of 02.04.2025 (fad26bbf22ac3da75e01e62aa01e5c8e11861005)

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generator/generator_tests/tesselator_test.cpp

@@ -0,0 +1,73 @@
+#include "testing/testing.hpp"
+
+#include "generator/tesselator.hpp"
+
+#include "base/logging.hpp"
+
+namespace tesselator_test
+{
+typedef m2::PointD P;
+
+class DoDump
+{
+  size_t & m_count;
+public:
+  explicit DoDump(size_t & count) : m_count(count)
+  {
+    m_count = 0;
+  }
+  void operator() (P const & p1, P const & p2, P const & p3)
+  {
+    ++m_count;
+    LOG(LINFO, (p1, p2, p3));
+  }
+};
+
+size_t RunTest(std::list<std::vector<P> > const & l)
+{
+  tesselator::TrianglesInfo info;
+  int const trianglesCount = tesselator::TesselateInterior(l, info);
+
+  size_t count;
+  info.ForEachTriangle(DoDump(count));
+  TEST_EQUAL(count, static_cast<size_t>(trianglesCount), ());
+  return count;
+}
+
+size_t RunTess(P const * arr, size_t count)
+{
+  std::list<std::vector<P> > l;
+  l.emplace_back();
+  l.back().assign(arr, arr + count);
+
+  return RunTest(l);
+}
+
+UNIT_TEST(Tesselator_SelfISect)
+{
+  P arr[] = { P(0, 0), P(0, 4), P(4, 4), P(1, 1), P(1, 3), P(4, 0), P(0, 0) };
+  TEST_EQUAL(6, RunTess(arr, ARRAY_SIZE(arr)), ());
+}
+
+UNIT_TEST(Tesselator_Odd)
+{
+  P arr[] = { P(-100, -100), P(100, 100), P(100, -100) };
+
+  size_t const count = ARRAY_SIZE(arr);
+
+  std::list<std::vector<P> > l;
+  l.emplace_back();
+  l.back().assign(arr, arr + count);
+  l.emplace_back();
+  l.back().assign(arr, arr + count);
+
+  TEST_EQUAL(0, RunTest(l), ());
+
+  P arr1[] = { P(-100, -100), P(100, -100), P(100, 100), P(-100, 100) };
+
+  l.emplace_back();
+  l.back().assign(arr1, arr1 + ARRAY_SIZE(arr1));
+
+  TEST_EQUAL(2, RunTest(l), ());
+}
+}  // namespace tesselator_test